Displaying 20 results from an estimated 10000 matches similar to: "Request: making cutree S3 in R?"
2015 May 18
2
A "bug" in plot.dendrogram - can't plot lty with character color
The problem:
===========
Once a dendrogram has a branch with both a line type AND a color (which is
a character color), the plot.dendrogram function will not plot and return
an error.
I say this is a bug because (I believe), we would like a dendrogram to be
able to use character colors, while also allowing control over line types.
This e-mail includes an example, and what I think a solution
2016 Apr 21
1
"cophenetic" function for objects of class "dendrogram"
Note that cophenetic.default (which works on the output of hclust(dist(X)))
uses the
row names of X as labels. as.dendrogram.hclust does not retain those row
names
so cophenetic.dendrogram cannot use them (so it orders them based on the
topology of the dendrogram).
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Thu, Apr 21, 2016 at 7:59 AM, William Dunlap <wdunlap at tibco.com> wrote:
2003 Dec 11
1
cutree with agnes
Hi,
this is rather a (presumed) bug report than a question because I can solve
my personal statistical problem by working with hclust instead of agnes.
I have done a complete linkage clustering on a dist object dm with 30
objects with agnes (R 1.8.0 on
RedHat) and I want to obtain the partition that results from a cut at
height=0.4.
I run
> cl1a <- agnes(dm, method="complete")
2003 Dec 11
1
cutree with agnes
Hi,
this is rather a (presumed) bug report than a question because I can solve
my personal statistical problem by working with hclust instead of agnes.
I have done a complete linkage clustering on a dist object dm with 30
objects with agnes (R 1.8.0 on
RedHat) and I want to obtain the partition that results from a cut at
height=0.4.
I run
> cl1a <- agnes(dm, method="complete")
2012 Mar 29
2
hclust and plot functions work, cutree does not
Hi,
I have the distance matrix computed and I feed it to hclust function. The
plot function produces a dense dendrogram as well. But, the cutree function
applied does not produce the desired list.
Here is the code
x=data.frame(similarity_matrix)
colnames(x) = c(source_tags_vec)
rownames(x) = c(source_tags_vec)
clust_tree=hclust(as.dist(x),method="complete")
plot(clust_tree)
2011 Sep 13
2
help with hclust and cutree
Hello,
I would like to cut a hclust tree into several groups at a specific
similarity. I assume this can be achieved by specifying the "h" argument
with the specified similarity, e.g.:
clust<-hclust(dist,"average")
cut<-cutree(clust,h=0.65)
Now, I would like to draw rectangles around the branches of the
dendrogram highlighting the corresponding clusters, as is done by
2011 Sep 16
1
cutree() and rect.hclust(): different labelling of classes
I've found that while cutree() and rect.hclust() make the same classes
for a given height in the dendrogram, the actual labeling of the classes
is different. For example, both produce the same 4 classes but
class 1 according to cutree() is class 4 according to rect.hclust().
Would it be possible that future versions provide the same labeling?
rect.hclust() is useful to display the classes
2015 May 20
1
Probably a "bug" in the dendextend package
Dear Martin,
You are right. When implementing the dendextend::set function, I failed to
notice that edgePar should accept a list instead of a vector. So all I did
was to discover a bug in my own code.
I am both sorry for taking your time due to my own mistake, and
also grateful for your help (I will resolve this bug before submitting the
next release to CRAN).
I am sure that I would have had
2010 Jun 23
1
Clustering
Hi,
I use the following clustering methods and get the
corresponding dendrograms for single, complete, average, ward and
kmeans clustering.
This gives the dendrograms, but doesn't show the calculation-way.
My question: is there a possibility to show this calculation steps
(cluster steps) in matrix or graphical form?
Mit freundlichen Gr??en
Ralph Modjesch
2005 Sep 15
2
about cutree
Hi Everyone,
I'm trying to use cutree to get the clusters after hclust. What I used is: mycluster<-cutree(cnclust,h=0.5)
Now, my problem is, how can I get the actual clusters? Thanks!
Best,
Baoqiang Cao
2004 Jul 21
2
Cutting heatmap dendrogram
Hello,
I've been clustering my data using hclust and cutting the resulting tree
with cutree. Separately, I visualize the clusterings with heatmap. Is it
possible to have the dendrogram on the heatmap reflect the cutree results?
That is, instead of having one large dendrogram, it would have 4 or 25 in
the example below. Any guidance on if that's possible or not, and what
kinds of
2011 Sep 12
1
hclust and cutree: identifying branches as classes
Good afternoon,
After cuting a hierarchical tree using cutree(), how to check correspondances between classes and branches?
This is what we do:
srndpchc <- hclust(dist(srndpc$x[1:1000,1:3]),method="ward") #creation of hierarchical tree
plclust(srndpchc,hmin=20000) #visualisation
srndpchc20000 = cutree(srndpchc,h=20000) #returns 4 classes
table(srndpchc20000 )
srndclass20000 =
2007 Oct 26
2
cut.dendrogram and cutree
Hi!
In the example:
hc <- hclust(dist(USArrests), "ave")
dend1 <- as.dendrogram(hc)
dend2 <- cut(dend1, h=70)
Do the branches "Branch 1", "Branch 2", "Branch 2"...in dend2$upper
str(dend2$upper)
--[dendrogram w/ 2 branches and 4 members at h = 152]
|--[dendrogram w/ 2 branches and 2 members at h = 77.6]
| |--leaf "Branch 1" (h=
2013 Aug 22
1
Interpreting the result of 'cutree' from hclust/heatmap.2
I have the following code that perform hiearchical clustering and plot
them in heatmap.
__
library(gplots)
set.seed(538)
# generate data
y <- matrix(rnorm(50), 10, 5, dimnames=list(paste("g", 1:10, sep=""),
paste("t", 1:5, sep="")))
# the actual data is much larger that the above
# perform hiearchical clustering and plot heatmap
test <- heatmap.2(y)
2017 Mar 23
1
A question on stats::as.hclust.dendrogram
Hi all,
This is the first time I'm writing to R-devel, and this time I'm just asking for the purpose for a certain line of code in stats::as.hclust.dendrogram, which comes up as I'm trying to fix dendextend.
The line in question is at line 128 of dendrogram.R in R-3.3.3, at stats::as.hclust.dendrogram:
stopifnot(length(s) == 2L, all( vapply(s, is.integer, NA) ))
Is there any
2004 Jun 17
1
Re: Clustering in R
Thanks a lot, Michael!
I cc to R-help, where this question really belongs {as the
'Subject' suggests itself...} -- please drop 'bioconductor' from
CC'ing further replies.
>>>>> "michael" == michael watson (IAH-C) <michael.watson at bbsrc.ac.uk>
>>>>> on Thu, 17 Jun 2004 09:16:59 +0100 writes:
michael> OK, admittedly it
2009 Aug 24
1
Saving heatmaps as PDFs
Hi,
I'm trying to save heatmaps as PDFs. However, the PDF version of the
heatmaps (Heatmap_CAFvsTNF_run2.pdf) is blurred when compared to its
counterpart, which was saved manually by using the software
"Grab" (Heatmap_CAFvsTNF_run2.tiff).
-----R code--------
sample_output <- "stroma_run2"
filename <-
2011 Mar 02
2
clustering problem
Hi,
I have a gene expression experiment with 20 samples and 25000 genes each.
I'd like to perform clustering on these. It turned out to become much faster
when I transform the underlying matrix with t(matrix). Unfortunately then
I'm not anymore able to use cutree to access individual clusters. In general
I do something like this:
hc <- hclust(dist(USArrests), "ave")
2013 Apr 23
1
assigning cluster id in cluster package-reg.
Well, you don't give much of an example....
I'm replying CC to the R mailing list. Please ask questions there, rather
than adressing individuals for basic help.
Here is one; does it answer your question ?
data(agriculture)
ag.ag <- agnes(agriculture)
class(ag.ag)
pltree(ag.ag) # the dendrogram, if you want to see it
## cut the dendrogram -> get cluster assignments:
(ck3 <-
2000 Jul 20
3
printing hclust with k clusters
howdy R friends,
I've searched CRAN but to no avail... I'm trying to use mva's hclust and
print out for say 10 clusters in batch. How do I do this? It's unclear if
I can use cutree.
thanks,
John Strumila
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